Siphon.



No. 93,850. PATENTBD JULY 21, 1908.

11. LANDAU. SIPHON.

APPLIUATION FILED DEC. 10. 1906.

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UNITED arana: OFFICE.

DEWIS LANDAU, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO LANDAU ECONOMICSIPHON COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OFCALIFORNIA.

SIPHON.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed December 10, 1906. Serial 110 347213.

To all whom it may concern:

Be it known that I, DEWIS LANDAU, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented new and useful Improvements in Siphons, ofwhich the following is a specification.

This invention relates to improvements in siphon bottles and the like.It is well known that, in bottles of this character, when almost all ofthe liquid has been withdrawn from the receptacle, the gaseous pressurefrequently becomes so low that'it is impossible to force out, by meansof said pressure, the residue of the liquid, and consequently thereceptacle 4 is not completely emptied. To avoid this result, it iscustomary to charge the bottle at a higher pressure than would otherwisebe necessary. But this unduly high pressure has been the cause of manyfatalities, owing to the bursting of the bottle. 1 One object of thepresent invention is to provide means whereby-this defect can beavoided.

A further object is to provide a bottle of this character having animprovedair relief which will tend to prevent the air relief passageremaining open after the charging of the siphon has been completed.

A further object is to provide a bottle of this character which can bemore easily and conveniently cleaned than heretofore.

In the accompanying drawing, Figure 1 is a broken side elevation of asiphon .bottle equipped with my invention; Fig. 2 is a similar viewtaken at right angles to Fig. 1; Fig. 3 is a view similar to Fig. 1 of amodified form of the invention; Fig. 4 is a detail side view at rightangles to that of Fig. 3 Figs. 5 and 6 are views similar to Figs. 3 and4 of a modified form of the invention.

Referring to the drawing, 1 indicates the rece tacle for the liquid,provided in the usua manner with a siphon tube 2. 3 indicates themetallic head of the siphon bottle, formed with a filling tube 4,whereby the siphon can be charged with aerated liquid from a chargingapparatus 5. The construction of these parts is, in general, similar tothat shown in my United States Patents Nos. 801,831, dated April 23,1905, and 816,985, dated August 1, 1905, and need not here be furtherspecified. The siphon head is also formed, at the opposite side to thecharging tube, with a discharge s out 6, a valve 7, and valve operatingmeclihnism 8,

all similar to those disclosed in my U. S. Patent No. 791,628, dated May25, 1904, the location, however, of this part of the mech anism beingdifferent from that shown in said patent.

The reason for changing the location of the discharging mechanism, is topermit of the addition of my improvement, which I will now describe indetail. Upon the top of the siphon head is screwed a vertical pumpcylinder 9, in which reciprocates a plunger 10 operated by a hollowhandle 11. Said cylinder connects with the interior of the sip-honthrough an aperture 12 in the upper wall 13, said aperture beingnormally closed bymeans of a valve 14 and a spring 15, around the stemof said valve, and pressing against a plate 16 upon the end of saidstem. A valve 17 closes the entrance to the hollow stem when the plungeris descending, and is opened when the plunger is ascending to admit airinto said pump chamber.

When nearly all of the liquid has been drawn off from the receptacle 1,and the gaseous pressure consequently becomes too low to force out theresidue of the liquid, the pressure may be increased by 0 crating thepump, thereby admitting air Tom the eX- teriorinto the pump chamber,and, when the air is sufficiently compressed, forcing it down wardsthrough valve 14 to open against the pressure of the spring. By thismeans the gaseous pressure is sufliciently increased to expel theresidue of the liquid from the siphon. A further advantage of thisconstruction is that it is no longer necessary to charge the siphonoriginally at a high pressure in order to have sufficient pressure toexpel the residue of the liquid, when nearly empty. This high pressurehas been the cause of many fatal accidents, all of which are avoided bythis improvement.

My invention also includes 'improved means for permitting the escape ofcompressed gas from the liquid. It is desirable that the air reliefshould not remain open longer than is necessary for the charging of thesiphon, and for this purpose, I have provided a construction whichnecessitates the use of the charging apparatus to maintain said airrelief open, so that, upon the removal of the chargmg apparatus, the airrelief automatically closes. This mechanism comprises a valve 20operated by a spring 21 inclosing the like. In Figs. 3 and 4', thelevers are at air relief opening 22, said valve having a stem 23extending through said opening and terminating in a pointed end 24. Saidend being pointed is not adapted to be pressed inwards by the finger toopen the air relief, and, for the purpose of so opening it, there is provided a metallic presser piece 25, which is attached to, and suspendedfrom, an arm 26 of the charging apparatus. When said charging apparatusis in position, said presser piece is also in such position that its endcan be applied to the pointed end of the valve stem to ress said valveinward and open the air relief. But as soon as the charging apparatus isremoved, the presser piece is necessarily removed with it, and the airrelief closes.

In Figs. 3 and 5, I have shown a modified form of pump, the plunger stemin this case being operated by means of a slotted lever 27 engaging apin 28 on the side of said stem. It is understood, however, that anyform of pump may be used. In these figures also a different dispensingapparatus is shown from that shown in Figs. 1 and 2, namely, thatdisclosed in my U. S. Patent No. 835,442, dated May 31,1906.

In Figs. 3, 4, 5, and 6 an improved form of siphon bottle is shown.Siphon bottles as at present constructed are difficult to clean. Theyneed washing out occasionally, and this, with their presentconstruction, is a di'lficult task, requiring special tools and eXperienced men to open the bottle. By my improvement this difficulty isavoided. For this purpose, the siphon head shown at 31 in these figures,is detachable, and in order to clamp the head in position, I use theordinary form of wire yoke-lever clamp 33 commonly used for milkbottles, beer bottles, and the tached to the head by means of ayokeshaped piece of wire 34 which engages lugs 35 cast upon said head,said piece 34 passing half way round said ortion, and its ends beinghooked into the oops 36 of the yoke lever 33. In Figs. 5 and 6, there isprovided a collar 30 attached to the glass portion of the bottle in theusual manner, and said yoke lever 33 is connected with said head bymeans of the hooked links 37. A rubber washer 32 is interposed betweenthe head and the glass bottle or the collar 30. It will readily be seenthat, with this construction, the metallic siphon head, carrying with itthe siphon tube, can be readily withdrawn for washing the bottle and asquickly replaced in posi tion, by any person, no experience beingnecessary. The rubber washer prevents any leakage at the juncture of theparts so separated.

I claimz- 1. A siphon bottle having means located at the side of thebottle for charging the siphon from a se arate char ing apparatus, andmeans for independently charging the bottle to increase the gaseouspressure, said means comprising a vertical pump cylinder, a plungeradapted to reciprocate in said cylinder, and a valve for admittingcompressed air from said cylinder into the siphon bottle, substantiallyas described.

2. A siphon bottle having an air relief comprising a valve for closingthe air relief passage, and having its outer end sharply pointed toprevent pressure on the same by the finger to actuate the relief valve,stantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

DEWIS LANDAU.

Witnesses:

FRANCIS M. WRIGHT, D. B. RICHARDS.

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